Annotation of src/usr.bin/tmux/grid.c, Revision 1.85
1.85 ! nicm 1: /* $OpenBSD: grid.c,v 1.84 2018/07/04 09:44:07 nicm Exp $ */
1.1 nicm 2:
3: /*
1.50 nicm 4: * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.20 nicm 21: #include <stdlib.h>
1.1 nicm 22: #include <string.h>
23:
24: #include "tmux.h"
25:
26: /*
27: * Grid data. This is the basic data structure that represents what is shown on
28: * screen.
29: *
30: * A grid is a grid of cells (struct grid_cell). Lines are not allocated until
31: * cells in that line are written to. The grid is split into history and
32: * viewable data with the history starting at row (line) 0 and extending to
33: * (hsize - 1); from hsize to hsize + (sy - 1) is the viewable data. All
34: * functions in this file work on absolute coordinates, grid-view.c has
35: * functions which work on the screen data.
36: */
37:
38: /* Default grid cell data. */
1.48 nicm 39: const struct grid_cell grid_default_cell = {
1.53 nicm 40: 0, 0, 8, 8, { { ' ' }, 0, 1, 1 }
1.48 nicm 41: };
1.66 nicm 42: static const struct grid_cell_entry grid_default_entry = {
1.48 nicm 43: 0, { .data = { 0, 8, 8, ' ' } }
44: };
1.1 nicm 45:
1.58 nicm 46: static void grid_empty_line(struct grid *, u_int, u_int);
1.57 nicm 47:
1.63 nicm 48: /* Store cell in entry. */
49: static void
50: grid_store_cell(struct grid_cell_entry *gce, const struct grid_cell *gc,
51: u_char c)
52: {
53: gce->flags = gc->flags;
54:
55: gce->data.fg = gc->fg & 0xff;
56: if (gc->fg & COLOUR_FLAG_256)
57: gce->flags |= GRID_FLAG_FG256;
58:
59: gce->data.bg = gc->bg & 0xff;
60: if (gc->bg & COLOUR_FLAG_256)
61: gce->flags |= GRID_FLAG_BG256;
62:
63: gce->data.attr = gc->attr;
64: gce->data.data = c;
65: }
66:
1.65 nicm 67: /* Check if a cell should be extended. */
68: static int
69: grid_need_extended_cell(const struct grid_cell_entry *gce,
70: const struct grid_cell *gc)
71: {
72: if (gce->flags & GRID_FLAG_EXTENDED)
73: return (1);
1.68 nicm 74: if (gc->attr > 0xff)
75: return (1);
1.65 nicm 76: if (gc->data.size != 1 || gc->data.width != 1)
77: return (1);
1.69 nicm 78: if ((gc->fg & COLOUR_FLAG_RGB) || (gc->bg & COLOUR_FLAG_RGB))
1.65 nicm 79: return (1);
80: return (0);
81: }
82:
1.76 nicm 83: /* Free up unused extended cells. */
84: static void
85: grid_compact_line(struct grid_line *gl)
86: {
87: int new_extdsize = 0;
88: struct grid_cell *new_extddata;
89: struct grid_cell_entry *gce;
90: struct grid_cell *gc;
91: u_int px, idx;
92:
93: if (gl->extdsize == 0)
94: return;
95:
96: for (px = 0; px < gl->cellsize; px++) {
97: gce = &gl->celldata[px];
98: if (gce->flags & GRID_FLAG_EXTENDED)
99: new_extdsize++;
100: }
101:
102: if (new_extdsize == 0) {
103: free(gl->extddata);
104: gl->extddata = NULL;
105: gl->extdsize = 0;
106: return;
107: }
108: new_extddata = xreallocarray(NULL, new_extdsize, sizeof *gl->extddata);
109:
110: idx = 0;
111: for (px = 0; px < gl->cellsize; px++) {
112: gce = &gl->celldata[px];
113: if (gce->flags & GRID_FLAG_EXTENDED) {
114: gc = &gl->extddata[gce->offset];
115: memcpy(&new_extddata[idx], gc, sizeof *gc);
116: gce->offset = idx++;
117: }
118: }
119:
120: free(gl->extddata);
121: gl->extddata = new_extddata;
122: gl->extdsize = new_extdsize;
123: }
124:
1.59 nicm 125: /* Set cell as extended. */
126: static struct grid_cell *
127: grid_extended_cell(struct grid_line *gl, struct grid_cell_entry *gce,
128: const struct grid_cell *gc)
129: {
130: struct grid_cell *gcp;
131:
132: gl->flags |= GRID_LINE_EXTENDED;
133:
134: if (~gce->flags & GRID_FLAG_EXTENDED) {
135: gl->extddata = xreallocarray(gl->extddata, gl->extdsize + 1,
136: sizeof *gl->extddata);
137: gce->offset = gl->extdsize++;
138: gce->flags = gc->flags | GRID_FLAG_EXTENDED;
139: }
140: if (gce->offset >= gl->extdsize)
141: fatalx("offset too big");
142:
143: gcp = &gl->extddata[gce->offset];
144: memcpy(gcp, gc, sizeof *gcp);
145: return (gcp);
1.84 nicm 146: }
147:
1.85 ! nicm 148: /* Get line data. */
1.84 nicm 149: struct grid_line *
150: grid_get_line(struct grid *gd, u_int line)
151: {
152: return (&gd->linedata[line]);
153: }
154:
1.85 ! nicm 155: /* Adjust number of lines. */
1.84 nicm 156: void
157: grid_adjust_lines(struct grid *gd, u_int lines)
158: {
159: gd->linedata = xreallocarray(gd->linedata, lines, sizeof *gd->linedata);
1.59 nicm 160: }
161:
1.48 nicm 162: /* Copy default into a cell. */
163: static void
1.58 nicm 164: grid_clear_cell(struct grid *gd, u_int px, u_int py, u_int bg)
1.48 nicm 165: {
1.59 nicm 166: struct grid_line *gl = &gd->linedata[py];
167: struct grid_cell_entry *gce = &gl->celldata[px];
168: struct grid_cell *gc;
169:
1.60 nicm 170: memcpy(gce, &grid_default_entry, sizeof *gce);
1.59 nicm 171: if (bg & COLOUR_FLAG_RGB) {
172: gc = grid_extended_cell(gl, gce, &grid_default_cell);
173: gc->bg = bg;
174: } else {
175: if (bg & COLOUR_FLAG_256)
176: gce->flags |= GRID_FLAG_BG256;
177: gce->data.bg = bg;
178: }
1.48 nicm 179: }
180:
1.43 nicm 181: /* Check grid y position. */
1.54 nicm 182: static int
1.81 nicm 183: grid_check_y(struct grid *gd, const char* from, u_int py)
1.1 nicm 184: {
1.78 nicm 185: if (py >= gd->hsize + gd->sy) {
1.81 nicm 186: log_debug("%s: y out of range: %u", from, py);
1.1 nicm 187: return (-1);
188: }
189: return (0);
190: }
1.23 nicm 191:
1.54 nicm 192: /* Compare grid cells. Return 1 if equal, 0 if not. */
193: int
194: grid_cells_equal(const struct grid_cell *gca, const struct grid_cell *gcb)
195: {
196: if (gca->fg != gcb->fg || gca->bg != gcb->bg)
197: return (0);
198: if (gca->attr != gcb->attr || gca->flags != gcb->flags)
199: return (0);
200: if (gca->data.width != gcb->data.width)
201: return (0);
202: if (gca->data.size != gcb->data.size)
203: return (0);
204: return (memcmp(gca->data.data, gcb->data.data, gca->data.size) == 0);
205: }
206:
1.75 nicm 207: /* Free one line. */
208: static void
209: grid_free_line(struct grid *gd, u_int py)
210: {
211: free(gd->linedata[py].celldata);
212: gd->linedata[py].celldata = NULL;
213: free(gd->linedata[py].extddata);
214: gd->linedata[py].extddata = NULL;
215: }
216:
217: /* Free several lines. */
218: static void
219: grid_free_lines(struct grid *gd, u_int py, u_int ny)
220: {
221: u_int yy;
222:
223: for (yy = py; yy < py + ny; yy++)
224: grid_free_line(gd, yy);
225: }
226:
1.1 nicm 227: /* Create a new grid. */
228: struct grid *
229: grid_create(u_int sx, u_int sy, u_int hlimit)
230: {
231: struct grid *gd;
232:
233: gd = xmalloc(sizeof *gd);
234: gd->sx = sx;
235: gd->sy = sy;
236:
1.7 nicm 237: gd->flags = GRID_HISTORY;
238:
1.55 nicm 239: gd->hscrolled = 0;
1.1 nicm 240: gd->hsize = 0;
241: gd->hlimit = hlimit;
242:
1.80 nicm 243: if (gd->sy != 0)
244: gd->linedata = xcalloc(gd->sy, sizeof *gd->linedata);
245: else
246: gd->linedata = NULL;
1.1 nicm 247:
248: return (gd);
249: }
250:
251: /* Destroy grid. */
252: void
253: grid_destroy(struct grid *gd)
254: {
1.75 nicm 255: grid_free_lines(gd, 0, gd->hsize + gd->sy);
1.1 nicm 256:
1.20 nicm 257: free(gd->linedata);
1.1 nicm 258:
1.20 nicm 259: free(gd);
1.1 nicm 260: }
261:
262: /* Compare grids. */
263: int
264: grid_compare(struct grid *ga, struct grid *gb)
265: {
1.10 nicm 266: struct grid_line *gla, *glb;
1.48 nicm 267: struct grid_cell gca, gcb;
1.1 nicm 268: u_int xx, yy;
269:
1.33 nicm 270: if (ga->sx != gb->sx || ga->sy != gb->sy)
1.1 nicm 271: return (1);
272:
273: for (yy = 0; yy < ga->sy; yy++) {
1.10 nicm 274: gla = &ga->linedata[yy];
275: glb = &gb->linedata[yy];
276: if (gla->cellsize != glb->cellsize)
1.1 nicm 277: return (1);
1.48 nicm 278: for (xx = 0; xx < gla->cellsize; xx++) {
279: grid_get_cell(ga, xx, yy, &gca);
280: grid_get_cell(gb, xx, yy, &gcb);
1.54 nicm 281: if (!grid_cells_equal(&gca, &gcb))
1.1 nicm 282: return (1);
283: }
284: }
285:
286: return (0);
287: }
288:
1.15 nicm 289: /*
290: * Collect lines from the history if at the limit. Free the top (oldest) 10%
291: * and shift up.
292: */
1.1 nicm 293: void
1.75 nicm 294: grid_collect_history(struct grid *gd)
1.1 nicm 295: {
1.75 nicm 296: u_int ny;
1.1 nicm 297:
1.77 nicm 298: if (gd->hsize == 0 || gd->hsize < gd->hlimit)
1.15 nicm 299: return;
300:
1.75 nicm 301: ny = gd->hlimit / 10;
302: if (ny < 1)
303: ny = 1;
1.77 nicm 304: if (ny > gd->hsize)
305: ny = gd->hsize;
1.75 nicm 306:
307: /*
308: * Free the lines from 0 to ny then move the remaining lines over
309: * them.
310: */
311: grid_free_lines(gd, 0, ny);
312: memmove(&gd->linedata[0], &gd->linedata[ny],
313: (gd->hsize + gd->sy - ny) * (sizeof *gd->linedata));
1.15 nicm 314:
1.75 nicm 315: gd->hsize -= ny;
1.55 nicm 316: if (gd->hscrolled > gd->hsize)
317: gd->hscrolled = gd->hsize;
1.15 nicm 318: }
319:
1.17 nicm 320: /*
1.15 nicm 321: * Scroll the entire visible screen, moving one line into the history. Just
322: * allocate a new line at the bottom and move the history size indicator.
323: */
324: void
1.58 nicm 325: grid_scroll_history(struct grid *gd, u_int bg)
1.15 nicm 326: {
327: u_int yy;
1.1 nicm 328:
329: yy = gd->hsize + gd->sy;
1.41 nicm 330: gd->linedata = xreallocarray(gd->linedata, yy + 1,
331: sizeof *gd->linedata);
1.58 nicm 332: grid_empty_line(gd, yy, bg);
1.17 nicm 333:
1.55 nicm 334: gd->hscrolled++;
1.76 nicm 335: grid_compact_line(&gd->linedata[gd->hsize]);
1.15 nicm 336: gd->hsize++;
337: }
1.1 nicm 338:
1.46 nicm 339: /* Clear the history. */
340: void
341: grid_clear_history(struct grid *gd)
342: {
1.75 nicm 343: grid_free_lines(gd, 0, gd->hsize);
344: memmove(&gd->linedata[0], &gd->linedata[gd->hsize],
345: gd->sy * (sizeof *gd->linedata));
1.46 nicm 346:
1.55 nicm 347: gd->hscrolled = 0;
1.46 nicm 348: gd->hsize = 0;
1.55 nicm 349:
1.46 nicm 350: gd->linedata = xreallocarray(gd->linedata, gd->sy,
351: sizeof *gd->linedata);
352: }
353:
1.15 nicm 354: /* Scroll a region up, moving the top line into the history. */
355: void
1.71 nicm 356: grid_scroll_history_region(struct grid *gd, u_int upper, u_int lower, u_int bg)
1.15 nicm 357: {
1.73 nicm 358: struct grid_line *gl_history, *gl_upper;
1.15 nicm 359: u_int yy;
360:
361: /* Create a space for a new line. */
362: yy = gd->hsize + gd->sy;
1.41 nicm 363: gd->linedata = xreallocarray(gd->linedata, yy + 1,
364: sizeof *gd->linedata);
1.1 nicm 365:
1.15 nicm 366: /* Move the entire screen down to free a space for this line. */
367: gl_history = &gd->linedata[gd->hsize];
368: memmove(gl_history + 1, gl_history, gd->sy * sizeof *gl_history);
369:
370: /* Adjust the region and find its start and end. */
371: upper++;
372: gl_upper = &gd->linedata[upper];
373: lower++;
374:
375: /* Move the line into the history. */
376: memcpy(gl_history, gl_upper, sizeof *gl_history);
377:
378: /* Then move the region up and clear the bottom line. */
379: memmove(gl_upper, gl_upper + 1, (lower - upper) * sizeof *gl_upper);
1.71 nicm 380: grid_empty_line(gd, lower, bg);
1.15 nicm 381:
382: /* Move the history offset down over the line. */
1.55 nicm 383: gd->hscrolled++;
1.1 nicm 384: gd->hsize++;
385: }
386:
387: /* Expand line to fit to cell. */
1.57 nicm 388: static void
1.58 nicm 389: grid_expand_line(struct grid *gd, u_int py, u_int sx, u_int bg)
1.1 nicm 390: {
1.10 nicm 391: struct grid_line *gl;
1.14 nicm 392: u_int xx;
1.1 nicm 393:
1.10 nicm 394: gl = &gd->linedata[py];
1.14 nicm 395: if (sx <= gl->cellsize)
1.1 nicm 396: return;
1.61 nicm 397:
1.62 nicm 398: if (sx < gd->sx / 4)
399: sx = gd->sx / 4;
400: else if (sx < gd->sx / 2)
401: sx = gd->sx / 2;
402: else
403: sx = gd->sx;
1.1 nicm 404:
1.41 nicm 405: gl->celldata = xreallocarray(gl->celldata, sx, sizeof *gl->celldata);
1.10 nicm 406: for (xx = gl->cellsize; xx < sx; xx++)
1.58 nicm 407: grid_clear_cell(gd, xx, py, bg);
1.10 nicm 408: gl->cellsize = sx;
1.1 nicm 409: }
410:
1.58 nicm 411: /* Empty a line and set background colour if needed. */
412: static void
413: grid_empty_line(struct grid *gd, u_int py, u_int bg)
414: {
415: memset(&gd->linedata[py], 0, sizeof gd->linedata[py]);
416: if (bg != 8)
417: grid_expand_line(gd, py, gd->sx, bg);
418: }
419:
1.26 nicm 420: /* Peek at grid line. */
421: const struct grid_line *
422: grid_peek_line(struct grid *gd, u_int py)
423: {
1.81 nicm 424: if (grid_check_y(gd, __func__, py) != 0)
1.26 nicm 425: return (NULL);
426: return (&gd->linedata[py]);
427: }
428:
1.79 nicm 429: /* Get cell from line. */
430: static void
431: grid_get_cell1(struct grid_line *gl, u_int px, struct grid_cell *gc)
1.1 nicm 432: {
1.79 nicm 433: struct grid_cell_entry *gce = &gl->celldata[px];
1.1 nicm 434:
1.48 nicm 435: if (gce->flags & GRID_FLAG_EXTENDED) {
436: if (gce->offset >= gl->extdsize)
437: memcpy(gc, &grid_default_cell, sizeof *gc);
438: else
439: memcpy(gc, &gl->extddata[gce->offset], sizeof *gc);
440: return;
441: }
1.1 nicm 442:
1.53 nicm 443: gc->flags = gce->flags & ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
1.48 nicm 444: gc->attr = gce->data.attr;
445: gc->fg = gce->data.fg;
1.53 nicm 446: if (gce->flags & GRID_FLAG_FG256)
447: gc->fg |= COLOUR_FLAG_256;
1.48 nicm 448: gc->bg = gce->data.bg;
1.53 nicm 449: if (gce->flags & GRID_FLAG_BG256)
450: gc->bg |= COLOUR_FLAG_256;
1.48 nicm 451: utf8_set(&gc->data, gce->data.data);
1.1 nicm 452: }
453:
1.79 nicm 454: /* Get cell for reading. */
455: void
456: grid_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc)
457: {
1.81 nicm 458: if (grid_check_y(gd, __func__, py) != 0 ||
459: px >= gd->linedata[py].cellsize) {
1.79 nicm 460: memcpy(gc, &grid_default_cell, sizeof *gc);
461: return;
462: }
463: return (grid_get_cell1(&gd->linedata[py], px, gc));
464: }
465:
1.1 nicm 466: /* Set cell at relative position. */
467: void
1.31 nicm 468: grid_set_cell(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
1.1 nicm 469: {
1.48 nicm 470: struct grid_line *gl;
471: struct grid_cell_entry *gce;
472:
1.81 nicm 473: if (grid_check_y(gd, __func__, py) != 0)
1.1 nicm 474: return;
475:
1.58 nicm 476: grid_expand_line(gd, py, px + 1, 8);
1.48 nicm 477:
478: gl = &gd->linedata[py];
1.58 nicm 479: if (px + 1 > gl->cellused)
480: gl->cellused = px + 1;
481:
1.63 nicm 482: gce = &gl->celldata[px];
1.65 nicm 483: if (grid_need_extended_cell(gce, gc))
1.59 nicm 484: grid_extended_cell(gl, gce, gc);
1.63 nicm 485: else
486: grid_store_cell(gce, gc, gc->data.data[0]);
1.64 nicm 487: }
488:
489: /* Set cells at relative position. */
490: void
491: grid_set_cells(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc,
492: const char *s, size_t slen)
493: {
494: struct grid_line *gl;
495: struct grid_cell_entry *gce;
496: struct grid_cell *gcp;
497: u_int i;
498:
1.81 nicm 499: if (grid_check_y(gd, __func__, py) != 0)
1.64 nicm 500: return;
501:
502: grid_expand_line(gd, py, px + slen, 8);
503:
504: gl = &gd->linedata[py];
505: if (px + slen > gl->cellused)
506: gl->cellused = px + slen;
507:
508: for (i = 0; i < slen; i++) {
509: gce = &gl->celldata[px + i];
1.65 nicm 510: if (grid_need_extended_cell(gce, gc)) {
511: gcp = grid_extended_cell(gl, gce, gc);
1.64 nicm 512: utf8_set(&gcp->data, s[i]);
513: } else
514: grid_store_cell(gce, gc, s[i]);
515: }
1.1 nicm 516: }
517:
1.14 nicm 518: /* Clear area. */
1.1 nicm 519: void
1.58 nicm 520: grid_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny, u_int bg)
1.1 nicm 521: {
522: u_int xx, yy;
523:
524: if (nx == 0 || ny == 0)
525: return;
526:
527: if (px == 0 && nx == gd->sx) {
1.58 nicm 528: grid_clear_lines(gd, py, ny, bg);
1.1 nicm 529: return;
530: }
531:
1.81 nicm 532: if (grid_check_y(gd, __func__, py) != 0)
1.1 nicm 533: return;
1.81 nicm 534: if (grid_check_y(gd, __func__, py + ny - 1) != 0)
1.1 nicm 535: return;
536:
537: for (yy = py; yy < py + ny; yy++) {
1.58 nicm 538: if (px + nx >= gd->sx && px < gd->linedata[yy].cellused)
539: gd->linedata[yy].cellused = px;
540: if (px > gd->linedata[yy].cellsize && bg == 8)
1.14 nicm 541: continue;
1.58 nicm 542: if (px + nx >= gd->linedata[yy].cellsize && bg == 8) {
1.14 nicm 543: gd->linedata[yy].cellsize = px;
544: continue;
545: }
1.72 nicm 546: grid_expand_line(gd, yy, px + nx, 8); /* default bg first */
1.58 nicm 547: for (xx = px; xx < px + nx; xx++)
548: grid_clear_cell(gd, xx, yy, bg);
1.1 nicm 549: }
550: }
551:
552: /* Clear lines. This just frees and truncates the lines. */
553: void
1.58 nicm 554: grid_clear_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
1.1 nicm 555: {
1.75 nicm 556: u_int yy;
1.1 nicm 557:
558: if (ny == 0)
559: return;
560:
1.81 nicm 561: if (grid_check_y(gd, __func__, py) != 0)
1.1 nicm 562: return;
1.81 nicm 563: if (grid_check_y(gd, __func__, py + ny - 1) != 0)
1.1 nicm 564: return;
565:
566: for (yy = py; yy < py + ny; yy++) {
1.75 nicm 567: grid_free_line(gd, yy);
1.58 nicm 568: grid_empty_line(gd, yy, bg);
1.1 nicm 569: }
570: }
571:
572: /* Move a group of lines. */
573: void
1.58 nicm 574: grid_move_lines(struct grid *gd, u_int dy, u_int py, u_int ny, u_int bg)
1.1 nicm 575: {
576: u_int yy;
577:
578: if (ny == 0 || py == dy)
579: return;
580:
1.81 nicm 581: if (grid_check_y(gd, __func__, py) != 0)
1.1 nicm 582: return;
1.81 nicm 583: if (grid_check_y(gd, __func__, py + ny - 1) != 0)
1.1 nicm 584: return;
1.81 nicm 585: if (grid_check_y(gd, __func__, dy) != 0)
1.1 nicm 586: return;
1.81 nicm 587: if (grid_check_y(gd, __func__, dy + ny - 1) != 0)
1.1 nicm 588: return;
589:
590: /* Free any lines which are being replaced. */
591: for (yy = dy; yy < dy + ny; yy++) {
592: if (yy >= py && yy < py + ny)
593: continue;
1.75 nicm 594: grid_free_line(gd, yy);
1.1 nicm 595: }
596:
1.46 nicm 597: memmove(&gd->linedata[dy], &gd->linedata[py],
598: ny * (sizeof *gd->linedata));
1.1 nicm 599:
1.75 nicm 600: /*
601: * Wipe any lines that have been moved (without freeing them - they are
602: * still present).
603: */
1.1 nicm 604: for (yy = py; yy < py + ny; yy++) {
1.58 nicm 605: if (yy < dy || yy >= dy + ny)
606: grid_empty_line(gd, yy, bg);
1.1 nicm 607: }
608: }
609:
610: /* Move a group of cells. */
611: void
1.58 nicm 612: grid_move_cells(struct grid *gd, u_int dx, u_int px, u_int py, u_int nx,
613: u_int bg)
1.1 nicm 614: {
1.10 nicm 615: struct grid_line *gl;
616: u_int xx;
1.1 nicm 617:
618: if (nx == 0 || px == dx)
619: return;
620:
1.81 nicm 621: if (grid_check_y(gd, __func__, py) != 0)
1.1 nicm 622: return;
1.10 nicm 623: gl = &gd->linedata[py];
1.1 nicm 624:
1.58 nicm 625: grid_expand_line(gd, py, px + nx, 8);
626: grid_expand_line(gd, py, dx + nx, 8);
1.46 nicm 627: memmove(&gl->celldata[dx], &gl->celldata[px],
628: nx * sizeof *gl->celldata);
1.67 nicm 629: if (dx + nx > gl->cellused)
630: gl->cellused = dx + nx;
1.1 nicm 631:
632: /* Wipe any cells that have been moved. */
633: for (xx = px; xx < px + nx; xx++) {
634: if (xx >= dx && xx < dx + nx)
635: continue;
1.58 nicm 636: grid_clear_cell(gd, xx, py, bg);
1.1 nicm 637: }
1.3 nicm 638: }
639:
1.24 nicm 640: /* Get ANSI foreground sequence. */
1.56 nicm 641: static size_t
1.24 nicm 642: grid_string_cells_fg(const struct grid_cell *gc, int *values)
643: {
644: size_t n;
1.53 nicm 645: u_char r, g, b;
1.24 nicm 646:
647: n = 0;
1.53 nicm 648: if (gc->fg & COLOUR_FLAG_256) {
1.24 nicm 649: values[n++] = 38;
650: values[n++] = 5;
1.53 nicm 651: values[n++] = gc->fg & 0xff;
652: } else if (gc->fg & COLOUR_FLAG_RGB) {
1.52 nicm 653: values[n++] = 38;
654: values[n++] = 2;
1.53 nicm 655: colour_split_rgb(gc->fg, &r, &g, &b);
656: values[n++] = r;
657: values[n++] = g;
658: values[n++] = b;
1.24 nicm 659: } else {
660: switch (gc->fg) {
1.45 nicm 661: case 0:
662: case 1:
663: case 2:
664: case 3:
665: case 4:
666: case 5:
667: case 6:
668: case 7:
669: values[n++] = gc->fg + 30;
670: break;
671: case 8:
672: values[n++] = 39;
673: break;
674: case 90:
675: case 91:
676: case 92:
677: case 93:
678: case 94:
679: case 95:
680: case 96:
681: case 97:
682: values[n++] = gc->fg;
683: break;
1.24 nicm 684: }
685: }
686: return (n);
687: }
688:
689: /* Get ANSI background sequence. */
1.56 nicm 690: static size_t
1.24 nicm 691: grid_string_cells_bg(const struct grid_cell *gc, int *values)
692: {
693: size_t n;
1.53 nicm 694: u_char r, g, b;
1.24 nicm 695:
696: n = 0;
1.53 nicm 697: if (gc->bg & COLOUR_FLAG_256) {
1.24 nicm 698: values[n++] = 48;
699: values[n++] = 5;
1.53 nicm 700: values[n++] = gc->bg & 0xff;
701: } else if (gc->bg & COLOUR_FLAG_RGB) {
1.52 nicm 702: values[n++] = 48;
703: values[n++] = 2;
1.53 nicm 704: colour_split_rgb(gc->bg, &r, &g, &b);
705: values[n++] = r;
706: values[n++] = g;
707: values[n++] = b;
1.24 nicm 708: } else {
709: switch (gc->bg) {
710: case 0:
711: case 1:
712: case 2:
713: case 3:
714: case 4:
715: case 5:
716: case 6:
717: case 7:
718: values[n++] = gc->bg + 40;
719: break;
720: case 8:
721: values[n++] = 49;
722: break;
723: case 100:
724: case 101:
725: case 102:
726: case 103:
727: case 104:
1.53 nicm 728: case 105:
1.24 nicm 729: case 106:
730: case 107:
731: values[n++] = gc->bg - 10;
732: break;
733: }
734: }
735: return (n);
736: }
737:
738: /*
739: * Returns ANSI code to set particular attributes (colour, bold and so on)
1.74 nicm 740: * given a current state.
1.24 nicm 741: */
1.56 nicm 742: static void
1.24 nicm 743: grid_string_cells_code(const struct grid_cell *lastgc,
1.26 nicm 744: const struct grid_cell *gc, char *buf, size_t len, int escape_c0)
1.24 nicm 745: {
1.52 nicm 746: int oldc[64], newc[64], s[128];
1.24 nicm 747: size_t noldc, nnewc, n, i;
1.70 nicm 748: u_int attr = gc->attr, lastattr = lastgc->attr;
1.24 nicm 749: char tmp[64];
750:
751: struct {
752: u_int mask;
753: u_int code;
754: } attrs[] = {
755: { GRID_ATTR_BRIGHT, 1 },
756: { GRID_ATTR_DIM, 2 },
757: { GRID_ATTR_ITALICS, 3 },
758: { GRID_ATTR_UNDERSCORE, 4 },
759: { GRID_ATTR_BLINK, 5 },
760: { GRID_ATTR_REVERSE, 7 },
1.68 nicm 761: { GRID_ATTR_HIDDEN, 8 },
762: { GRID_ATTR_STRIKETHROUGH, 9 }
1.24 nicm 763: };
764: n = 0;
765:
766: /* If any attribute is removed, begin with 0. */
767: for (i = 0; i < nitems(attrs); i++) {
768: if (!(attr & attrs[i].mask) && (lastattr & attrs[i].mask)) {
769: s[n++] = 0;
1.25 nicm 770: lastattr &= GRID_ATTR_CHARSET;
1.24 nicm 771: break;
772: }
773: }
774: /* For each attribute that is newly set, add its code. */
775: for (i = 0; i < nitems(attrs); i++) {
776: if ((attr & attrs[i].mask) && !(lastattr & attrs[i].mask))
777: s[n++] = attrs[i].code;
778: }
779:
1.70 nicm 780: /* Write the attributes. */
781: *buf = '\0';
782: if (n > 0) {
783: if (escape_c0)
784: strlcat(buf, "\\033[", len);
785: else
786: strlcat(buf, "\033[", len);
787: for (i = 0; i < n; i++) {
788: if (i + 1 < n)
789: xsnprintf(tmp, sizeof tmp, "%d;", s[i]);
790: else
791: xsnprintf(tmp, sizeof tmp, "%d", s[i]);
792: strlcat(buf, tmp, len);
793: }
794: strlcat(buf, "m", len);
795: }
796:
797: /* If the foreground colour changed, write its parameters. */
1.24 nicm 798: nnewc = grid_string_cells_fg(gc, newc);
799: noldc = grid_string_cells_fg(lastgc, oldc);
1.70 nicm 800: if (nnewc != noldc ||
801: memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0 ||
802: (n != 0 && s[0] == 0)) {
803: if (escape_c0)
804: strlcat(buf, "\\033[", len);
805: else
806: strlcat(buf, "\033[", len);
807: for (i = 0; i < nnewc; i++) {
808: if (i + 1 < nnewc)
809: xsnprintf(tmp, sizeof tmp, "%d;", newc[i]);
810: else
811: xsnprintf(tmp, sizeof tmp, "%d", newc[i]);
812: strlcat(buf, tmp, len);
813: }
814: strlcat(buf, "m", len);
1.24 nicm 815: }
816:
1.39 nicm 817: /* If the background colour changed, append its parameters. */
1.24 nicm 818: nnewc = grid_string_cells_bg(gc, newc);
819: noldc = grid_string_cells_bg(lastgc, oldc);
1.70 nicm 820: if (nnewc != noldc ||
821: memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0 ||
822: (n != 0 && s[0] == 0)) {
1.26 nicm 823: if (escape_c0)
824: strlcat(buf, "\\033[", len);
825: else
826: strlcat(buf, "\033[", len);
1.70 nicm 827: for (i = 0; i < nnewc; i++) {
828: if (i + 1 < nnewc)
829: xsnprintf(tmp, sizeof tmp, "%d;", newc[i]);
1.24 nicm 830: else
1.70 nicm 831: xsnprintf(tmp, sizeof tmp, "%d", newc[i]);
1.24 nicm 832: strlcat(buf, tmp, len);
833: }
834: strlcat(buf, "m", len);
835: }
836:
837: /* Append shift in/shift out if needed. */
1.26 nicm 838: if ((attr & GRID_ATTR_CHARSET) && !(lastattr & GRID_ATTR_CHARSET)) {
839: if (escape_c0)
1.70 nicm 840: strlcat(buf, "\\016", len); /* SO */
1.26 nicm 841: else
842: strlcat(buf, "\016", len); /* SO */
843: }
844: if (!(attr & GRID_ATTR_CHARSET) && (lastattr & GRID_ATTR_CHARSET)) {
845: if (escape_c0)
1.70 nicm 846: strlcat(buf, "\\017", len); /* SI */
1.26 nicm 847: else
848: strlcat(buf, "\017", len); /* SI */
849: }
1.24 nicm 850: }
851:
1.3 nicm 852: /* Convert cells into a string. */
853: char *
1.24 nicm 854: grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx,
1.28 nicm 855: struct grid_cell **lastgc, int with_codes, int escape_c0, int trim)
1.3 nicm 856: {
1.48 nicm 857: struct grid_cell gc;
1.24 nicm 858: static struct grid_cell lastgc1;
1.38 nicm 859: const char *data;
1.24 nicm 860: char *buf, code[128];
1.26 nicm 861: size_t len, off, size, codelen;
1.16 nicm 862: u_int xx;
1.30 nicm 863: const struct grid_line *gl;
1.3 nicm 864:
1.29 nicm 865: if (lastgc != NULL && *lastgc == NULL) {
1.24 nicm 866: memcpy(&lastgc1, &grid_default_cell, sizeof lastgc1);
867: *lastgc = &lastgc1;
868: }
869:
1.3 nicm 870: len = 128;
871: buf = xmalloc(len);
872: off = 0;
873:
1.30 nicm 874: gl = grid_peek_line(gd, py);
1.3 nicm 875: for (xx = px; xx < px + nx; xx++) {
1.30 nicm 876: if (gl == NULL || xx >= gl->cellsize)
877: break;
1.48 nicm 878: grid_get_cell(gd, xx, py, &gc);
879: if (gc.flags & GRID_FLAG_PADDING)
1.3 nicm 880: continue;
881:
1.24 nicm 882: if (with_codes) {
1.48 nicm 883: grid_string_cells_code(*lastgc, &gc, code, sizeof code,
1.26 nicm 884: escape_c0);
1.24 nicm 885: codelen = strlen(code);
1.48 nicm 886: memcpy(*lastgc, &gc, sizeof **lastgc);
1.24 nicm 887: } else
888: codelen = 0;
889:
1.48 nicm 890: data = gc.data.data;
891: size = gc.data.size;
1.26 nicm 892: if (escape_c0 && size == 1 && *data == '\\') {
1.27 nicm 893: data = "\\\\";
1.26 nicm 894: size = 2;
895: }
896:
897: while (len < off + size + codelen + 1) {
1.41 nicm 898: buf = xreallocarray(buf, 2, len);
1.21 nicm 899: len *= 2;
900: }
1.3 nicm 901:
1.24 nicm 902: if (codelen != 0) {
903: memcpy(buf + off, code, codelen);
904: off += codelen;
905: }
1.26 nicm 906: memcpy(buf + off, data, size);
907: off += size;
1.3 nicm 908: }
1.17 nicm 909:
1.37 nicm 910: if (trim) {
1.28 nicm 911: while (off > 0 && buf[off - 1] == ' ')
912: off--;
1.32 nicm 913: }
1.3 nicm 914: buf[off] = '\0';
1.26 nicm 915:
1.3 nicm 916: return (buf);
1.7 nicm 917: }
918:
1.17 nicm 919: /*
1.75 nicm 920: * Duplicate a set of lines between two grids. Both source and destination
921: * should be big enough.
1.7 nicm 922: */
923: void
1.31 nicm 924: grid_duplicate_lines(struct grid *dst, u_int dy, struct grid *src, u_int sy,
925: u_int ny)
1.7 nicm 926: {
1.10 nicm 927: struct grid_line *dstl, *srcl;
928: u_int yy;
1.7 nicm 929:
930: if (dy + ny > dst->hsize + dst->sy)
931: ny = dst->hsize + dst->sy - dy;
932: if (sy + ny > src->hsize + src->sy)
933: ny = src->hsize + src->sy - sy;
1.75 nicm 934: grid_free_lines(dst, dy, ny);
1.7 nicm 935:
936: for (yy = 0; yy < ny; yy++) {
1.11 nicm 937: srcl = &src->linedata[sy];
938: dstl = &dst->linedata[dy];
1.10 nicm 939:
940: memcpy(dstl, srcl, sizeof *dstl);
941: if (srcl->cellsize != 0) {
1.42 deraadt 942: dstl->celldata = xreallocarray(NULL,
1.10 nicm 943: srcl->cellsize, sizeof *dstl->celldata);
944: memcpy(dstl->celldata, srcl->celldata,
945: srcl->cellsize * sizeof *dstl->celldata);
1.44 nicm 946: } else
947: dstl->celldata = NULL;
1.7 nicm 948:
1.48 nicm 949: if (srcl->extdsize != 0) {
950: dstl->extdsize = srcl->extdsize;
951: dstl->extddata = xreallocarray(NULL, dstl->extdsize,
952: sizeof *dstl->extddata);
953: memcpy(dstl->extddata, srcl->extddata, dstl->extdsize *
954: sizeof *dstl->extddata);
955: }
956:
1.10 nicm 957: sy++;
958: dy++;
1.7 nicm 959: }
1.22 nicm 960: }
961:
1.80 nicm 962: /* Mark line as dead. */
963: static void
964: grid_reflow_dead(struct grid_line *gl)
965: {
966: memset(gl, 0, sizeof *gl);
967: gl->flags = GRID_LINE_DEAD;
968: }
969:
970: /* Add lines, return the first new one. */
971: static struct grid_line *
972: grid_reflow_add(struct grid *gd, u_int n)
973: {
974: struct grid_line *gl;
975: u_int sy = gd->sy + n;
976:
977: gd->linedata = xreallocarray(gd->linedata, sy, sizeof *gd->linedata);
978: gl = &gd->linedata[gd->sy];
979: memset(gl, 0, n * (sizeof *gl));
980: gd->sy = sy;
981: return (gl);
982: }
983:
984: /* Move a line across. */
985: static struct grid_line *
986: grid_reflow_move(struct grid *gd, struct grid_line *from)
987: {
988: struct grid_line *to;
989:
990: to = grid_reflow_add(gd, 1);
991: memcpy(to, from, sizeof *to);
992: grid_reflow_dead(from);
993: return (to);
994: }
995:
1.79 nicm 996: /* Join line below onto this one. */
1.56 nicm 997: static void
1.80 nicm 998: grid_reflow_join(struct grid *target, struct grid *gd, u_int sx, u_int yy,
999: u_int width, u_int *cy, int already)
1.48 nicm 1000: {
1.83 nicm 1001: struct grid_line *gl, *from = NULL;
1.79 nicm 1002: struct grid_cell gc;
1.83 nicm 1003: u_int lines, left, i, to, line, want = 0;
1.80 nicm 1004: u_int at;
1.79 nicm 1005: int wrapped = 1;
1.48 nicm 1006:
1.80 nicm 1007: /*
1008: * Add a new target line.
1009: */
1010: if (!already) {
1011: to = target->sy;
1012: gl = grid_reflow_move(target, &gd->linedata[yy]);
1013: } else {
1014: to = target->sy - 1;
1015: gl = &target->linedata[to];
1016: }
1017: at = gl->cellused;
1018:
1019: /*
1020: * Loop until no more to consume or the target line is full.
1021: */
1.79 nicm 1022: lines = 0;
1023: for (;;) {
1024: /*
1025: * If this is now the last line, there is nothing more to be
1026: * done.
1027: */
1.82 nicm 1028: if (yy + 1 + lines == gd->hsize + gd->sy)
1.79 nicm 1029: break;
1030: line = yy + 1 + lines;
1.48 nicm 1031:
1.79 nicm 1032: /* If the next line is empty, skip it. */
1033: if (~gd->linedata[line].flags & GRID_LINE_WRAPPED)
1034: wrapped = 0;
1035: if (gd->linedata[line].cellused == 0) {
1036: if (!wrapped)
1037: break;
1.82 nicm 1038: lines++;
1.48 nicm 1039: continue;
1.79 nicm 1040: }
1041:
1042: /*
1043: * Is the destination line now full? Copy the first character
1044: * separately because we need to leave "from" set to the last
1045: * line if this line is full.
1046: */
1047: grid_get_cell1(&gd->linedata[line], 0, &gc);
1048: if (width + gc.data.width > sx)
1049: break;
1050: width += gc.data.width;
1.80 nicm 1051: grid_set_cell(target, at, to, &gc);
1.79 nicm 1052: at++;
1053:
1054: /* Join as much more as possible onto the current line. */
1055: from = &gd->linedata[line];
1056: for (want = 1; want < from->cellused; want++) {
1057: grid_get_cell1(from, want, &gc);
1058: if (width + gc.data.width > sx)
1059: break;
1060: width += gc.data.width;
1061:
1.80 nicm 1062: grid_set_cell(target, at, to, &gc);
1.79 nicm 1063: at++;
1064: }
1065: lines++;
1066:
1067: /*
1068: * If this line wasn't wrapped or we didn't consume the entire
1069: * line, don't try to join any further lines.
1070: */
1071: if (!wrapped || want != from->cellused || width == sx)
1072: break;
1073: }
1074: if (lines == 0)
1075: return;
1.48 nicm 1076:
1.79 nicm 1077: /*
1078: * If we didn't consume the entire final line, then remove what we did
1079: * consume. If we consumed the entire line and it wasn't wrapped,
1080: * remove the wrap flag from this line.
1081: */
1082: left = from->cellused - want;
1083: if (left != 0) {
1084: grid_move_cells(gd, 0, want, yy + lines, left, 8);
1085: from->cellsize = from->cellused = left;
1086: lines--;
1087: } else if (!wrapped)
1088: gl->flags &= ~GRID_LINE_WRAPPED;
1089:
1090: /* Remove the lines that were completely consumed. */
1.80 nicm 1091: for (i = yy + 1; i < yy + 1 + lines; i++) {
1092: free(gd->linedata[i].celldata);
1093: free(gd->linedata[i].extddata);
1094: grid_reflow_dead(&gd->linedata[i]);
1.48 nicm 1095: }
1.79 nicm 1096:
1097: /* Adjust cursor and scroll positions. */
1.80 nicm 1098: if (*cy > to + lines)
1.79 nicm 1099: *cy -= lines;
1.80 nicm 1100: else if (*cy > to)
1101: *cy = to;
1102: if (gd->hscrolled > to + lines)
1.79 nicm 1103: gd->hscrolled -= lines;
1.80 nicm 1104: else if (gd->hscrolled > to)
1105: gd->hscrolled = to;
1.48 nicm 1106: }
1107:
1.79 nicm 1108: /* Split this line into several new ones */
1.56 nicm 1109: static void
1.80 nicm 1110: grid_reflow_split(struct grid *target, struct grid *gd, u_int sx, u_int yy,
1111: u_int at, u_int *cy)
1.23 nicm 1112: {
1.80 nicm 1113: struct grid_line *gl = &gd->linedata[yy], *first;
1.79 nicm 1114: struct grid_cell gc;
1.80 nicm 1115: u_int line, lines, width, i, xx;
1116: u_int used = gl->cellused;
1.79 nicm 1117: int flags = gl->flags;
1.23 nicm 1118:
1.80 nicm 1119: /* How many lines do we need to insert? We know we need at least two. */
1.79 nicm 1120: if (~gl->flags & GRID_LINE_EXTENDED)
1.80 nicm 1121: lines = 1 + (gl->cellused - 1) / sx;
1.79 nicm 1122: else {
1.80 nicm 1123: lines = 2;
1.79 nicm 1124: width = 0;
1125: for (i = at; i < used; i++) {
1126: grid_get_cell1(gl, i, &gc);
1127: if (width + gc.data.width > sx) {
1128: lines++;
1129: width = 0;
1130: }
1131: width += gc.data.width;
1132: }
1133: }
1.23 nicm 1134:
1.79 nicm 1135: /* Insert new lines. */
1.80 nicm 1136: line = target->sy + 1;
1137: first = grid_reflow_add(target, lines);
1.79 nicm 1138:
1139: /* Copy sections from the original line. */
1140: width = 0;
1141: xx = 0;
1142: for (i = at; i < used; i++) {
1143: grid_get_cell1(gl, i, &gc);
1144: if (width + gc.data.width > sx) {
1.80 nicm 1145: target->linedata[line].flags |= GRID_LINE_WRAPPED;
1.79 nicm 1146:
1147: line++;
1148: width = 0;
1149: xx = 0;
1150: }
1151: width += gc.data.width;
1.80 nicm 1152: grid_set_cell(target, xx, line, &gc);
1.79 nicm 1153: xx++;
1154: }
1155: if (flags & GRID_LINE_WRAPPED)
1.80 nicm 1156: target->linedata[line].flags |= GRID_LINE_WRAPPED;
1157:
1158: /* Move the remainder of the original line. */
1159: gl->cellsize = gl->cellused = at;
1160: gl->flags |= GRID_LINE_WRAPPED;
1161: memcpy(first, gl, sizeof *first);
1162: grid_reflow_dead(gl);
1.79 nicm 1163:
1164: /* Adjust the cursor and scroll positions. */
1165: if (yy <= *cy)
1.80 nicm 1166: (*cy) += lines - 1;
1.79 nicm 1167: if (yy <= gd->hscrolled)
1.80 nicm 1168: gd->hscrolled += lines - 1;
1.23 nicm 1169:
1.79 nicm 1170: /*
1171: * If the original line had the wrapped flag and there is still space
1172: * in the last new line, try to join with the next lines.
1173: */
1174: if (width < sx && (flags & GRID_LINE_WRAPPED))
1.80 nicm 1175: grid_reflow_join(target, gd, sx, yy, width, cy, 1);
1.23 nicm 1176: }
1177:
1.79 nicm 1178: /* Reflow lines on grid to new width. */
1179: void
1180: grid_reflow(struct grid *gd, u_int sx, u_int *cursor)
1.23 nicm 1181: {
1.80 nicm 1182: struct grid *target;
1.79 nicm 1183: struct grid_line *gl;
1184: struct grid_cell gc;
1185: u_int yy, cy, width, i, at, first;
1186: struct timeval start, tv;
1.23 nicm 1187:
1.79 nicm 1188: gettimeofday(&start, NULL);
1.23 nicm 1189:
1.79 nicm 1190: log_debug("%s: %u lines, new width %u", __func__, gd->hsize + gd->sy,
1191: sx);
1192: cy = gd->hsize + (*cursor);
1.23 nicm 1193:
1.79 nicm 1194: /*
1.80 nicm 1195: * Create a destination grid. This is just used as a container for the
1196: * line data and may not be fully valid.
1197: */
1198: target = grid_create(gd->sx, 0, 0);
1199:
1200: /*
1201: * Loop over each source line.
1.79 nicm 1202: */
1203: for (yy = 0; yy < gd->hsize + gd->sy; yy++) {
1204: gl = &gd->linedata[yy];
1.80 nicm 1205: if (gl->flags & GRID_LINE_DEAD)
1206: continue;
1.23 nicm 1207:
1.80 nicm 1208: /*
1209: * Work out the width of this line. first is the width of the
1210: * first character, at is the point at which the available
1211: * width is hit, and width is the full line width.
1212: */
1.79 nicm 1213: first = at = width = 0;
1214: if (~gl->flags & GRID_LINE_EXTENDED) {
1215: first = 1;
1216: width = gl->cellused;
1217: if (width > sx)
1218: at = sx;
1219: else
1220: at = width;
1221: } else {
1222: for (i = 0; i < gl->cellused; i++) {
1223: grid_get_cell1(gl, i, &gc);
1224: if (i == 0)
1225: first = gc.data.width;
1226: if (at == 0 && width + gc.data.width > sx)
1227: at = i;
1228: width += gc.data.width;
1229: }
1230: }
1.23 nicm 1231:
1.79 nicm 1232: /*
1.80 nicm 1233: * If the line is exactly right or the first character is wider
1234: * than the targe width, just move it across unchanged.
1.79 nicm 1235: */
1.80 nicm 1236: if (width == sx || first > sx) {
1237: grid_reflow_move(target, gl);
1.79 nicm 1238: continue;
1.80 nicm 1239: }
1.23 nicm 1240:
1.79 nicm 1241: /*
1242: * If the line is too big, it needs to be split, whether or not
1243: * it was previously wrapped.
1244: */
1245: if (width > sx) {
1.80 nicm 1246: grid_reflow_split(target, gd, sx, yy, at, &cy);
1.79 nicm 1247: continue;
1248: }
1.23 nicm 1249:
1.79 nicm 1250: /*
1251: * If the line was previously wrapped, join as much as possible
1252: * of the next line.
1253: */
1254: if (gl->flags & GRID_LINE_WRAPPED)
1.80 nicm 1255: grid_reflow_join(target, gd, sx, yy, width, &cy, 0);
1256: else
1257: grid_reflow_move(target, gl);
1258: }
1.55 nicm 1259:
1.80 nicm 1260: /*
1261: * Replace the old grid with the new.
1262: */
1263: if (target->sy < gd->sy)
1264: grid_reflow_add(target, gd->sy - target->sy);
1265: gd->hsize = target->sy - gd->sy;
1266: free(gd->linedata);
1267: gd->linedata = target->linedata;
1268: free(target);
1.22 nicm 1269:
1.80 nicm 1270: /*
1271: * Update scrolled and cursor positions.
1272: */
1.79 nicm 1273: if (gd->hscrolled > gd->hsize)
1274: gd->hscrolled = gd->hsize;
1275: if (cy < gd->hsize)
1276: *cursor = 0;
1277: else
1278: *cursor = cy - gd->hsize;
1.23 nicm 1279:
1.79 nicm 1280: gettimeofday(&tv, NULL);
1281: timersub(&tv, &start, &tv);
1282: log_debug("%s: now %u lines (in %llu.%06u seconds)", __func__,
1283: gd->hsize + gd->sy, (unsigned long long)tv.tv_sec,
1284: (u_int)tv.tv_usec);
1.1 nicm 1285: }
![[BACK]](/icons/back.gif){kind=icon}
Return to grid.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux